Take 50% less Damage over Time if you've started taking Damage over Time in the past second
Take 50% more Damage over Time if you've haven't started taking Damage over Time in the past second

so, the first second, when you got hit by DoT, you take 50% more dot damage, BUT after the first tick, you take 50% less dot damage.

1st tick - 50% more dot damage

2nd tick - less 50% dot damage

3rd tick and beyond - 50% dot damage

if that is correct, then this keystone is pretty good, or what is the catch here?

edit:

1. waltz around = haven't started taking Damage over Time in the past second
2. got hit by DoT = haven't started taking Damage over Time in the past second (this is the FIRST dot) => will take 50% more dot dmg
3. after the first second/tick = you've started taking Damage over Time in the past second => Take 50% less Damage over Time
4. so after the first tick/first second, you will take 50% LESS dot damage, right?

>You get hit by a DoT. For 1 second, you take half damage.<

I don't get it. before you got hit by dot, [you've haven't started taking Damage over Time in the past second] so you [Take 50% more Damage] right? and only after you got by dot [you've started taking Damage over Time in the past second] then you will after that [Take 50% less Damage over Time ]

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2nd edit. answer from chatgpt:

How Heartstopper Works:

1. First Hit (First Second of DoT):Example: If you were to take 100 damage per second (dps) from the DoT effect, you would initially take 150 dps (50% more) for the first second.
   • When you first start taking Damage over Time (DoT), for that initial second, you will take 50% more DoT damage.
   • This means that for the first second after you get hit by DoT, you are effectively more vulnerable to the damage. This might be dangerous for a brief moment.
2. After the First Second (Second Tick Onwards):Example: After the first second, if the DoT was doing 100 dps, you would now only take 50 dps (50% less) for the remaining duration of the DoT.
   • After you’ve been taking DoT for 1 second, the modifier switches to 50% less DoT damage. So, from the second tick onwards, your DoT damage is reduced by 50%.

To summarize the mechanics:

• First second (first tick of DoT): You take 50% more DoT damage (making you more vulnerable).
• After the first second (subsequent ticks): You take 50% less DoT damage (making you more resistant).

Example Scenario:

1. You get hit by a DoT (100 dps).
   • For the first second: 150 dps (50% more damage).
   • After the first second: 50 dps (50% less damage).
2. Another example: If you are hit by a DoT with a burst (say 500 dps for 3 seconds):
   • For the first second: 750 dps (50% more).
   • After the first second: 250 dps (50% less).

In this case, Heartstopper reduces the total damage you would take from the DoT after the first second, but the initial burst could still be dangerous.

Final Takeaway:

Heartstopper shifts the timing of when you’re vulnerable to DoT. The first second is when you’re most vulnerable (50% more damage), and after that, you're significantly more resistant to DoT (50% less damage).